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db_machdep.h revision 1.7 
      1 /*	$NetBSD: db_machdep.h,v 1.7 1996/03/31 22:21:28 pk Exp $ */
      2 
      3 /*
      4  * Mach Operating System
      5  * Copyright (c) 1991,1990 Carnegie Mellon University
      6  * All Rights Reserved.
      7  *
      8  * Permission to use, copy, modify and distribute this software and its
      9  * documentation is hereby granted, provided that both the copyright
     10  * notice and this permission notice appear in all copies of the
     11  * software, derivative works or modified versions, and any portions
     12  * thereof, and that both notices appear in supporting documentation.
     13  *
     14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
     16  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     17  *
     18  * Carnegie Mellon requests users of this software to return to
     19  *
     20  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     21  *  School of Computer Science
     22  *  Carnegie Mellon University
     23  *  Pittsburgh PA 15213-3890
     24  *
     25  * any improvements or extensions that they make and grant Carnegie Mellon
     26  * the rights to redistribute these changes.
     27  */
     28 
     29 #ifndef	_SPARC_DB_MACHDEP_H_
     30 #define	_SPARC_DB_MACHDEP_H_
     31 
     32 /*
     33  * Machine-dependent defines for new kernel debugger.
     34  */
     35 
     36 
     37 #include <vm/vm.h>
     38 #include <machine/frame.h>
     39 #include <machine/psl.h>
     40 #include <machine/trap.h>
     41 #include <machine/reg.h>
     42 
     43 /* end of mangling */
     44 
     45 typedef	vm_offset_t	db_addr_t;	/* address - unsigned */
     46 typedef	int		db_expr_t;	/* expression - signed */
     47 
     48 typedef struct {
     49 	struct trapframe ddb_tf;
     50 	struct frame	 ddb_fr;
     51 } db_regs_t;
     52 
     53 db_regs_t		ddb_regs;	/* register state */
     54 #define	DDB_REGS	(&ddb_regs)
     55 #define	DDB_TF		(&ddb_regs.ddb_tf)
     56 #define	DDB_FR		(&ddb_regs.ddb_fr)
     57 
     58 #define	PC_REGS(regs)	((db_addr_t)(regs)->ddb_tf.tf_pc)
     59 
     60 #define	BKPT_INST	0x91d02001	/* breakpoint instruction */
     61 #define	BKPT_SIZE	(4)		/* size of breakpoint inst */
     62 #define	BKPT_SET(inst)	(BKPT_INST)
     63 
     64 #define	db_clear_single_step(regs)	(void) (0)
     65 #define	db_set_single_step(regs)	(void) (0)
     66 
     67 #define	IS_BREAKPOINT_TRAP(type, code)	((type) == T_BREAKPOINT)
     68 #define IS_WATCHPOINT_TRAP(type, code)	(0)
     69 
     70 #define	inst_trap_return(ins)	((ins)&0)
     71 #define	inst_return(ins)	((ins)&0)
     72 #define	inst_call(ins)		((ins)&0)
     73 #define inst_load(ins)		0
     74 #define inst_store(ins)		0
     75 
     76 #define DB_MACHINE_COMMANDS
     77 
     78 void db_machine_init __P((void));
     79 int kdb_trap __P((int, struct trapframe *));
     80 
     81 
     82 #endif	/* _SPARC_DB_MACHDEP_H_ */
     83